Academics – Mathematics : 2010/DEC/03
Question
Q3. (a) The sag, s metres, in a wire of length L metres stretched between two supports x metres apart, as illustrated in Fig Q3(a), is given by the formula:
L = x + 8 s2/3x
Calculate the distance x when L is 200 m and s is 8 m. (8)
(b) Given: R = ((27y - 18x) (4x2+ 12xy + 9y2 ))/(4x2- 9y2)(10x + 15y)
Express R as a fraction in its simplest form. (8)
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